公开(公告)号：WO2014058749A1

公开(公告)日：2014-04-17

申请号：PCT/US2013/063624

申请日：2013-10-07

申请人： CURWOOD, INC.

发明人： JANICHEK, Daniel, Frank, Jr. ,  CONRAD, Brian, Joseph ,  NIMIS, Christopher, Wayne ,  PETERKA, Matthew, Christopher

IPC分类号： B65D71/08

CPC分类号： B65D77/2024 ,  B65D77/2032 ,  B65D77/2036

摘要： The present disclosure is concerned with heat shrunk sealed packages of flexible transparent thermoplastic film that easily opened by peeling. It involves lowering the peel strength of the heat seal between the two films used to form the package by providing one of them with a frangible layer by contaminating a layer with an incompatible polymer and providing a set of graspable tabs, one on each of the films, with which to initiate peeling of the heat seal. The tabs are heat set so that they do not shrink with the rest of the package. In a preferred embodiment, the package is provided with a second heat seal just inside the perimeter of the first and a stress concentrator, which may be a chevron, at the juncture of heat set tabs which lie with one atop the other with the first heat seal.

摘要翻译： 本公开涉及通过剥离容易打开的柔性透明热塑性薄膜的热收缩密封包装。 它包括降低用于形成包装的两个薄膜之间的热封的剥离强度，其中一个薄膜通过用不相容的聚合物污染一层而提供易碎层，并提供一组可抓紧的薄片，每个薄膜上有一个 ，用于开始热封的剥离。 片状物被热定形，使得它们不与包装的其余部分收缩。 在优选实施例中，封装在刚好位于第一热源的周边周围的第二热密封件和可能是人字形的应力集中器，该热应力集中器在热定型接头的接合部处设置有第一热源 密封。

公开(公告)号：WO2013095780A1

公开(公告)日：2013-06-27

申请号：PCT/US2012/062969

申请日：2012-11-01

申请人： CURWOOD, INC.

发明人： CONRAD, Brian, Joseph ,  SARX, Gordon, Charles ,  JANICHEK, Daniel, Frank

IPC分类号： B29C51/42

CPC分类号： B29C51/422 ,  B29C51/10 ,  B29C2791/006 ,  B29C2795/002 ,  B29K2023/086 ,  B29K2067/00 ,  B29K2077/00 ,  B29K2105/02 ,  B29K2227/06 ,  B29K2995/0067 ,  B29L2031/7162

摘要： The present disclosure is concerned with improving the appearance of graphics (26, 28) printed on a flexible polymer film (20) which is subsequently heated to a forming temperature and then drawn into a mold to form a cavity adapted for the packaging of an item, typically a food item. The improvement is effected by reducing the heat trans¬ fer to the portions of the film carrying the graphics thereby reducing the formability of these portions so that they stretch less than the rest of the film which is drawn into the mold.

摘要翻译： 本公开涉及改进打印在柔性聚合物膜（20）上的图形（26,28）的外观，其随后被加热到成形温度，然后被吸入模具中以形成适于包装物品的空腔 ，通常是食品。 改进是通过将热转移到承载图形的膜的部分来实现的，从而降低这些部分的成形性，使得它们比被拉入模具中的膜的其余部分拉伸得少。